- pin metal2vulkan at upstream 0dfdbcd5 with the rebased 16-patch series;
scripts/check-metal2vulkan-pin.py proves with git alone that the
checkout is upstream plus exactly those patches
- Turnip's pipeline cache UUID comes from its compiler source
(-Dtu-build-id), the same for the host and the tablet build
- scripts/make-pipeline-cache.py runs the render server's priming over
every library of the OS image on the host through the tablet's
compiler and packs the cache